Shure AVC20 User manual

Brand: Shure

Model: AVC20

Category: AV receivers

Type: User manual

Shure AVC20 is your new home theater system expander with a variety of features to enhance your entertainment experience. With the AVC20, you can enjoy surround sound effects, central control of most video equipment, easy-to-operate volume balance controls, and a sound memory circuit. The Surround Indicator can be switched on or off, and the AVC20 can be used as a high output stereo amplifier when in the Balanced Transformerless (BTL) mode.

Owner's

Manual

VIDEO

HI-FI

SYSTEM

EXPANDER

222 HARTREY AVENUE EVANSTON, ILLINOIS 60202-3696 U.S.A TELEPHONE (312) 866-2200 CABLE SHUREMICRO

NOTICE

The AVC20 offers the choice of three different types

of surround-sound effects: Dolby Surround, Spatial

Surround, or Concert Surround.

The AVC20 is equipped with Four Power amplifiers.

The

AVC20 allows central control of most video equip-

ment.

4 types of easy to operate volume balance controls.

The

AVC20 is equipped with

sound memory circuit.

The Surround Indicator can be switched on or off.

The

AVC20 can be used as

high output stereo amp-

lifier when in the Balanced Transformerless (BTL) mode.

TABLE

CONTENTS

..........................................

Special features

.....................................

Surround-sound effects 3

.....................................

Installing the glass door 3

.........................................

Locating speakers 4

.....................................

Connection of speakers 5

......................

Function names and operations

Front panel

......................

Function names and operations

Rear panel.

................................

Volume

Balance control

;

................................

Use of wireless remote control

..............................

Use of the image enhancer switch

............................................

Applications 15

Example of use with a variety of different equipment

..................................

(Monophonic video deck)

....................................

(STEREO video deck)

......................................

(Two video decks)

............................

(Video deck and video disc player)

.......................

(TV equipped with video input terminal)

....................................

(Overall connections)

.........................................

Cautions on usage 30

........................................

Troubleshooting.. 31

...........................................

Specifications 31

This equipment generates and uses radio fre.

quency energy and if not installed and

properly, that is, in strict accordance wi

manufacturer's instructions, may cause

interler-

ence to radio and television reception. It has

been type tested and found to comply

'je

limits for Class

€4

computing device in jr.

dance with the specifications in Subpart

Part 15 of

FCC

Rules, which are designed to

provide reasonable protection against such

interference in a residential installation. How-

ever, there is no guarantee that interference

will not occur in a

particular installation. If this

equipment does cause interference to radio or

television reception, which can

determined

by turning the equipment off and on, the user

is encouraged to try to correct the interference

by one or more of the following measures

reorient the receiving antenna

relocate the equipment with respect to the

receiver

move the equipment away from the receiver

plug the equipment into a different outlet

so that

ecluipment and receiver are on dif-

ferent branch circuits.

If necessary, the user should consult the dealer

or an experienced

radioltelevision technician

for additional suggestions. The user may find

the following booklet prepared by the Federal

Commuincations Commission helpful:

"How to Identify and Resolve Radio-TV inter-

ference Problems"

"This booklet is available frorr the

Govern-

ment Printing Office. Washington.

D.C.,

Stock No. 004-000-00345-4"

Caution:

To prevent electric shock do not use

this (polarized) plug with an extension cord.

receptacle or other outlet unless the blades can

be fully inserted to prevent blade exposure.

Attention:

Pour prBvenir les chocs Blectriques ne

pas utiliser cette fiche polaris6e avec un prolon-

gateur, une prise de courant ou une autre sortie

de courant,

sauf si les lames peuvent Btre ins6rBes

fond sans en laisser aucune partie

dbcouven.

RISK

ELECTRIC SHOCK

Amn

Caution: To reduce the risk of electric

shock, do not remove cover (or back).

No user serviceable parts inside.

Refer servicing to qualified service

personnel.

WARNING: TO PREVENT

FIRE OR SHOCK HAZARD,

NOT EXPOSE

THIS APPLIANCE TO RAIN OR MOISTURE

The lightning flash with arrowhead symbol, within an equilateral

triangle, is intended to alert the user to the presence of uninsulated

"dangerous voltage" within the product's enclosure that may

sufficient magnitude to constitute

risk of electric shock to persons.

The exclamation point within an equilateral triangle

intended to

alert the user to the presence of important operating and maintenance

(servicing) instructions in the literature accompanying the

applianw

SURROUND-SOUND

EFFECTS

Surround-sound

The

AVC20 is equipped with three types of surround

processors which provide

sense of presence and expan-

sion.

Every day, we are exposed to sounds coming from our

)

surroundings. Some sounds reach our ears directly from

the source, some indirectly reflected off of walls or the

ceiling. Sounds of voices reach us from behind, sounds

of cars reach us from the side.

Sounds coming from all

around us are called "surround-sounds".

In order to recreate with as much precision as possible,

that special sound heard in movie theaters, speakers are

placed both in front of and behind the listeners. The

reason that sound from the television in our homes

different from the sound in movie theaters is because

sound from a television only comes from in front of

the viewer. With a surround system, the spatial infor-

mation encoded in a film's sound track will be repro-

duced in the home listening area.

The sound from

TV equipped with a single speaker (or

two speakers with stereo televisions) sounds very dif-

ferent from the actual, "live" sound.

The AVC20 is equipped with three types of surround

processors to recreate that sense of presence and let you

enjoy surround-sound in the privacy of your own home.

Surround Processors

DOLBY SURROUND*

Provides the optimal sound when watching recent movies,

especially those encoded with the DOLBY SURROUND

or DOLBY STEREO process. The front speakers provide

the normal stereo effect, while the rear speakers reproduce

the surround signals. This position provides excellent

results when watching television programs, video soft-

ware, video discs, or videotapes of stereo television broad-

casts.

CONCERT SURROUND

This provides the best results when watching old movies

or video recordings of concerts. The front speakers provide

the normal stereo effect, while the rear speakers provide

reverberation like that heard in concert halls. The reverbe-

ration time can be adjusted using the CONCERT

SURROUND Control.

SPATIAL SURROUND

Use this when watching live sports games to reproduce that

stadium feeling.

*Manufactured under license from Dolby Laboratories Licensing

Corporation. Additionally licensed under one or more of the

following patents:

U.S.

numbers 3,632,886, 3,746,792, ar~d

3,959,590; Canada numbers 1.004.603 and 1.037.877 "Dolb~"

and the double-D symbol are trademarks of Dolby Laborator~es

L~cens~ng Corporat~on.

S STALLING

THE

GLASS

DOOR

LOCATING

SPEAKERS

Speaker location will depend in each case on the size and

shape of the specific room in which the Home Theater

System is installed. The diagrams below may be used as a

general guide to speaker placement in rooms of various

shapes. To avoid interference with the tv picture, speakers

without special magnetic shielding should ordinarily be

more than

0.6m

ft) from the screen. In each case, it is

best to consult the tv and loudspeaker manufacturers.

When a Center speaker is employed (See page

18).

is most conveniently mounted above or below the screen,

but always as close to the screen centerline

possible.

Because very low frequencies are nondirectional in

room,

subwoofer (See page

can usually be loca

almost anywhere convenient in the room. However, de-

pending on room acoustics and the particular subwoofer,

some locations may be clearly superior to others. Consult

the subwoofer manufacturer for specifics.

LOCATING SPEAKERS

CONNECTION OF

SPEAKERS

Connection of

Speakers

OPERATE SWITCH

MONO OUT

Normally this switch is SPEAKER AC OUTLET

Monophonic Output kept to the left (seen OUTPUT

(SWITCHED)

Terminals from behind). TERMINALS

There

one set of four speaker output terminals. Use speakers with an impedance of

ohms.

Connection of Speaker Cables

Normal

Speaker

Connection

If the bare speaker wire is too short, strip off

the vinyl and make the exposed wires the

same length.

lomm

[318'n1

EXAMPLE:

With a speaker terminal on the

bottom side.

Press down the lever and insert the cord. Use a

"+"

terminal for the

side of the speaker and

Remove your finger from the lever, and pull

"-"

terminal for the

side.

on the cord to be sure that

properly con-

Raise the lever.

nected. Be sure that the wire does not stick out

Put the Operation Switch in the

NORMAL

from the cord and come into contact with

position.

wire of another cord,

as this may damage the

equipment.

FUNCTION NAMES AND OPERATIONS-FRONT PANEL

Function Names and Operations

Power Switch (POWER)

Use this switch to turn the power of the

AVC20

on and off. After turning on, allow approximately

seconds to pass before using. During this time,

the FULL MUTE indicator on the concen-

trated indicator panel will flash, indicating that the

set is in the stand-by mode.

Concentrated Indicator Panel

lndicators light up according to the operations

performed on the

AVC2O.

SURROUND INDICATOR

Three red

LEDs are displayed, depending on

the level at the

AVMO speaker outputs.

Front Left Channel Front

Right

Channel

Rear

Left Channel

Rear

Right Channel

REMOTE SENSOR

This is the window used for receiving the signal

from the supplied wireless remote control unit.

BYPASS

Use this position when you wish to

obtain stereo sound without any

surround effect.

Sound is produced only from the two

front speakers.

SYNTHETIC STEREO

Use this switch to obtain simulated

stereo sound from monophonic signals.

Use the SYNTHETIC STEREO vol-

ume control located inside the control

panel door to adjust the stereo effect.

This function can also be used to expand a

stereo source.

CONCERT

SURROUND

This

the best position for viewing

Volume and Balance Controls

(For

details,

refer

page

10)

televised concerts or old movies.

Use the CONCERT SURROUND

Input Selector Switches and lndicators

volume control located inside the

con-

(AUDIOIVIDEO SELECTOR)

trol panel door to adjust the

reverbera-

Use these switches to select the program source.

When the

WE]

switch

pressed, the

SPATIAL

time.

SURROUND

sound source

switched to the component

This

the best position for viewing

connected to the TAPE input terminals while

sports or music programs.

the video source

provided by the A-V INPUT

whose selector switch

pressed.

(For details, refer to page

18)

DOLBY

This

the best position for viewing

SURROUND

movies.

The AVC20 is equipped with the

proper Dolby Surround decoder for

use especially with video software con-

taining the DOLBY SURROUND

mark

,,,,,,~

,,~,,,,,,

,,(

or movies in which the DOLBY

STEREO

rnark~OImre*m~mI'"appears

at the end.

The Dolby Surround system

manufactured under

licence from Dolby Laboratories Licencing Corporation.

Refer to page

for more detailed information.

Surround Indicator Switch

(SURROUND INDICATOR)

Use this switch to turn the SURROUND

INDICATOR on or off.

Press once to turn the SURROUND INDICA-

TOR off if

distracting.

NOISE Filter Switch (NOISE FILTER)

This filter reduces the hissing noise

produced when viewing old movies for

example.

MONO INPUT

Depress when using

monophonic video deck.

The STEREO indicator will turn off.

FULL MUTE

Depress to cut off sound momentarily.

When dep~essed, the indicator will light.

Press again to return to the original volume.

Volume Reset Switch (VOLUME RESET)

Use this to make the volume from each speaker

equal.

As the volume will be low when this is done,

use the volume switches

to readjust the

balance.

Image Enhancer Switch (IMAGE ENHANCER)

Use this switch to make the contours of the

picture clearer.

3dB

6dB

OFF

As the image enhancer makes all details of the

picture clearer, small white spots on the screen

may also stand out, thus making the picture

actually harder to see. If this is the case, turn

the function OFF.

Synthetic Stereo Control (SYNTHETIC STEREO)

Use this control to adjust the effect when the

SYNTHETIC STEREO switch

turned on.

Expansion becomes greater when turned clock-

wise, and lower when turned counterclock-

wise.

Concert Surround Control (CONCERT SURROUND)

Use this control to adjust the effect when the

CONCERT SURROUND button

depressed.

The reverberation time is increased when

turned clockwise.

Input Balance Control (INPUT BALANCE)

Use this to balance the left and right channels

of the input source.

INPUT VOLUME

Use this control to set the maximum volume.

(Refer to page

for details.)

Tone Control

Treble and bass tones can be controlled for both

the front and rear speakers.

Use the FRONT control to adjust the tone of

the front speakers, and the REAR control for

the rear speakers.

Use the TREBLE and BASS controls to adjust

treble or bass.

Turn clockwise to increase the effect, or count-

erclockwise to decrease.

FUNCTION NAMES AND OPERATIONS-REAR PANEL

Function Names and Operations

A-V INPUT

Input/Output Terminals

A-V INPUT

InputIOutput Terminals

A-V INPUT

and

Input/Output Terminals

are used for connection of components on which

recording is possible, such

video deck.

A-V INPUT

lnput Terminals

A-V

INPUT@

lnput Terminals are used for con-

nection of components for which only playback

possible, such as video disc players compact disc

players, or television tuners.

PHONO lnput Terminals

PHONO lnput Terminals are used for connection

of a Phono Turntable without preamp.

NOTE: Selected input signals (including PHONO

and TAPE) appear at output jacks of A-V INPUT

A-V INPUT 2 and TAPE.

Monitor Output Terminals (MONITOR OUT)

These are used for connection to video input

terminals of color

monito,rs or televisions

equipped with video input terminals.

There are two independent output terminals,

making possible the connection to two com-

ponents.

Tape Input/Output Terminals (TAPE INIOUT)

Connect an audio cassette deck or the like to

these terminals.

(For details, refer to page

18)

These are front speaker preamplifier output and

main amplifier input terminals.

These are rear speaker preamplifier output and

main amplifier input terminals.

Use these for connection of an equalizer or

signal processor or of a pre-amplifier or main

amplifier other than those of the

AVC20.

Usually, use the AVC20 with the pre-amplifier

output terminals connected to the main

amplifier input terminals with the supplied

U-

shaped connecting pin.

The AVC20 can also be used in the BTL mode

surround processor. For details, refer to

Pages

and

17.

Monophonic output Terminal

MONO OUT A,

Use these outputs for connection to

Sub-

woofer or center channel amplifier and speaker

sub-woofer will transduce only low-frequ-

ency signals,

full-range speaker will handle the

complete audio spectrum.)

The output level

approximately

a rated

input. Match with the input sensitivity of the

speaker or other component to be connected.

The output signal of terminals

@,)

mixture

of the front left and right channels. When the

volume of the front speakers

high, the

MONO

output level also increases. This can be used as a

center channel output.

(For details, refer to page

18).

Operation Selector Switch

Use this switch to select NORMAL or Balanced

Transformerless

(BTL) operation.

NORMAL Operation

Use this position for independent operation

of the four power amplifiers.

This is the position in which the AVC20

normall

used.

In this position, the AVC20's output is

30W x

BTL Operation

Use this position to use the AVC20 as a

stereo amplifier, with the four power ampli-

fiers combined in groups of two.

In this position, the AVC20's output is 60W

x 2.

Power Cord

Plug this into an ac wall outlet. 120

Vac 60Hz.

Supplementary Power Outlets (AC OUTLETS)

SWITCHED

This outlet operates only when the AVC20

power is on.

Use this outlet to plug in equipment with a

maximum power consumption of

100W.

Use this outlet for example for a self-powered

subwoofer.

Supplementary Power Outlets (AC OUTLETS)

UNSWITCHED

These outlets can be used regardless of whether

the

AVC20 power is on or not.

Use these outlets to plug in equipment with

maximum power consumption of 100W.

CAUTION

TURN OFF

AVC2O

POWER BEFORE

OPERATING

THIS SWITCH.

(For details, refer to page

15)

Speaker Connection Terminals

Use these to connect speakers.

(Refer to page

for details.)

WARNING

Power Consumption of Outlets

Never use the AC OUTLETS with equipment

which consumes more power than is indicated

on the panel (for example, toasters or hair

dryers). This could damage the equipment or

result in a fire.

VOLUME-BALANCE CONTROL

The AVC20 is equipped with

built-in power amplifiers. The volume of each of these can be controlled separately.

Volume Control

Press the upper side

to simultaneously increase the volume of all four speakers.

Press the lower side

to simultaneously decrease the volume of all four speakers.

IvoLuME

Volume increases faster than

decreases.

Balance Control

FL:

lncreases the volume of the front left speaker.

FR: lncreases the volume of the front right speaker.

RL: lncreases the volume of the rear left speaker.

RR:

Increases the volume of the rear right speaker.

FRONT: Causes the surround image to slowly travel towards the front.

REAR: Causes the surround image to slowly travel towards the rear.

LEFT:

Causes the surround image to slowly travel towards the left.

RIGHT:

Causes the surround image to slowly travel towards the right.

When the volume of one of the four speakers reaches

the maximum level, the indicator flashes. When

the volume of one of the four speakers reaches the

minimum level, the indicator flashes.

This mark lights.

Dolby Surround and lnput Volume

The output level on some

VHD video disc players or laser disc players is quite high. When

this is the case, DOLBY SURROUND sound may be distorted. Should this happen, lower

the INPUT VOLUME. INPUT

VOLUME

lnput Volume

The lnput Volume control located behind the control

Adjusting the lnput Volume

panel door is used to

set

the maximum volume

First set the INPUT VOLUME control to the mini-

that the volume of none of the speakers exceeds

mum. (Number

inside the control panel door)

certain level.

Use the Volume up control and set the AVC20

volume to the maximum (the

If_l

indicator will

flash), then bring

down

steps.

(Press the Volume down

button

short times)

Next gradually increase the lnput Volume until a

comfortable listening level is reached.

This is described by the following diagram.

Greatest volume which

LIMIT

This mark lights.

.fin

Volume you most frequently use.

+.-

can be produced by

the

AVCZO

+-------

Greatest volume set by

the INPUT

VOLUME

control.

k4i.i-m volume

LOWER

no sound is produced.

USE

WIRELESS

REMOTE CONTROL

A variety of operations are possible from a comfortable distance when, using the wireless remote

control unit.

Remote Control Sensor

.When using the wireless remote control,

always point it toward the remote control

sensor on the

AVC20.

This wireless remote control unit uses infrared

rays. Exposure of the sensor on the

AVC20

to strong fluorescent light or the like could

result in malfunction. Locate the

AVC20

to minimize exposure to surrounding light.

.The wireless remote control unit should

used within vertical or horizontal angles of

A~~~~~.

A~~~~~,

approximately

30'

with respect to the sensor 600 meters

on the

AVC20 at a distance up to 7m (20ft).

INSERTING BATTERIES

Remove the cover on the rear.

Insert two size "AA" batteries, pay close

Replace the cover.

attention to the correct polarity

I+

and

-1.

CAUTIONS ON BATTERIES

Use size "AA" batteries.

Replace the batteries when distance of ope-

ration decreases.

The replacement interval depends on the

number of times used, but it

recommend-

ed that the batteries be replaced at least

once every year.

When not using the remote control unit for

an extended period of time, remove the

batteries.

Do not use an old battery with a new one or

two batteries of different types (for example,

one dry cell and one alkaline battery), as this

may result in leakage or damage to the unit.

Should leakage occur, wipe thoroughly and

insert new batteries.

Do not short circuit, disassemble, or throw

batteries into flames.

Do not place objects on top of the remote

control unit, as the batteries will wear out if

key

held down.

Always strictly observe cautions written on

batteries.

Do not dispose of batteries together with

flammable garbage (where applicable).

SURROUND-SOUND EFFECT SELECTION

The

AVC20 provides

choice of

surround effects,

depending upon the program or software being viewed.

For programs for which the surround effect

not nece-

ssary, such as news broadcasts, press the BYPASS but-

ton. Sound can be heard from the front speakers only.

-1-

Press this button for movies, etc.

1-1-

Press this button for sports programs etc.

JCONCERTI-

Press this button for concerts or old movies.

*Refer to page

for more detailed information.

Use

Volume Button

First press the RESET button (there

no need to keep it

pressed down), then press the side of the VOLUME

button. When held down, the volume gradually increases. If

the volume becomes too loud, press the

mside. When the

desired volume is reached, release the button.

Adjusting Volume Balance

From the listening position, adjust the volume balance,

using the controls described below, to feel engulfed from all

sides while maintaining a good front stage orientation.

Readjust the overall volume.

I=].

.Causes the surround image to slowly

travel towards the front.

-1

. . .

.Causes the surround image to slowly

travel towards the rear.

. .

.Causes the surround image to slowly

travel towards the left.

. .

. . .

.Causes the surround image to slowly

travel towards the right.

Use of the Preset Volume Buttons

is possible to place in the memory three different volume

adjustment settings. When the optimal adjustment is reach-

shown in number

above, press the STORE button.

(There

is no need to keep

pressed in.) When this

done, the PRESET VOLUME indicators

(

and

(

)on the

AVC20

will flash. While the indicators are

flashing (approximately

seconds), press one of the PRE-

SET VOLUME buttons on the wireless remote control unit.

The volume adjustment

now stored in the memory.

Simply press the desired button to obtain the preset volume

adjustment later on.

volume adjustment setting will remain stored in

the memory for approximately one week after the

power

turned off.

To change a preset volume adjustment setting,

adjust the volume

desired, and follow the same

procedure

in step

above. The previous setting

in the memory will be erased.

The preset volume adjustment setting can only be

obtained by using the remote control unit.

Use of Full Mute Button

Press this button when you wish to turn off the volume

momentarily, such as when

visitor arrives unexpectedly

or when the telephone rings. The FULL MUTE indicator

Won the

AVC20

will flash. Press the button once

again to return to the previous volume.

USE

THE IMAGE ENHANCER SWITCH

Use of the

IMAGE ENHANCER

Switch

The lrnage Enhancer function

very effective for

cleaning up fuzzy pictures, or when watching

foreign films, making movie subtitles clearer.

The switch works in three steps:

..........

dB (decibels) For lesser effect.

.........

dB (decibels) For greater effect.

OFF.

..............

Switch

tuned off.

When watching old movies or video software and

white shimmering appears on the screen, using the

lrnage Enhancer Switch to clear this up may make

the screen hard to

see.

Use the switch only when

the picture

improved.

APPLICATIONS

(1)

Balanced Transformerless (BTL) Mode

The AVC20 has a built-in 4-way 30W amplifier system,

but by switching to BTL operation,

can be used as

2-way 6oW amplifier system.

BTL

. .

Balanced Transformerless

Switching

CAUTION

TURN OFF

AVCZO POWER BEFORE OPERATING

BTLSWITCH.

Adding Amplifiers in the

BTL

Mode

Adding amplifiers while in the BTL mode makes possible

the creation of a sound system with total output greater

than 120 watts.

Only use this switch when the power is off.

Set the NORMALIBTL switch to the BTL side.

Connect the speakers as shown in the diagram.

Sound is produced from the outside speaker terminals

when using the

AVC20 in the BTL mode. (The rear

"+"

speaker terminals become BTL

'I-"

speaker terminals.)

Connection

(A)

To use the AVC20 on the two front channels and use

the two rear channels with other amplifiers, remove the

U-shaped short pins

shown in the diagram.

(In order not to lose the pins, use cellophane adhesive

tape or the like to fix them to the rear panel.)

Connect the REAR- PRE OUT terminals to the AUX

IN terminals of the added stereo amplifier using pin

plug cables.

When this is done, the AVC20 volume control can be

operated, but the volume of the other amplifier must be

increased to match that of the

AVC20.

Connection

(6)

To use the AVC20 on the two rear channels and use the

two front channels with an added amplifier, change the

U-shaped short pins as shown in the diagram.

Connect the FRONT-PRE OUT terminals to the input

terminals of the other amplifier using pin plug cables.

Use the outside speaker terminals for the Rear speakers.

When this

done, the AVC20 volume control can be

operated, but the volume of the other amplifier must

increased to a suitable level.

-SPEAKER

SYSTEMS-

Remove both the FRONT and

REAR short pins, and as shown

in the diagram, connect the

FRONT

MAIN IN and REAR

PRE OUT terminals.

Right Channel Left Channel

Rear Speakers

I I

Other Amplifier

Right Channel Left Channel

Front Speakers

(2)

Using as Surround Processor

The AVC20 can be used by disconnecting both the front

and rear pre-amplifiers and main amplifiers.

To use the

AVC20 as a surround processor with different

main amplifiers, remove the four short pins as shown in the

diagram, and use pin cords to connect the

PRE

OUT termi-

nals to the input terminals of the other amplifiers.

When this

done, the AVC20 volume control can be ope-

rated, but the volume of the other amplifiers must be

increased to a suitable level. The

AVC20 amplifiers can also

be used by connecting Aux level outputs of audio devices

to the

MAIN inputs.

SPEAKER SYSTEMS-

Connect the AVC20

PRE

OUT terminals to the input

terminals of the other amplifiers using cables with phono

plugs at the

AVC20 side and appropriate connectors

the

amplifier side.

Center Speaker

Center

Arnpl~f

ier

SPEAKER

(3)

MONO OUT

Many audio/video systems are

set

up with a television

centered between two speakers. Sometimes, however,

if the speakers are located far away from the tele-

vision, the resultant center localization can become

confusing.

To provide better center localization, connect one of

the

AVC20's mono outputs to an external amplifier

and speaker, placing the speaker under, or as close

as possible to, the television.

Use

shielded magnet type speaker as the center

speaker, and keep as close

possible to the monitor

screen for best results.

When using

monophonic main amplifier

the cen-

ter channel, use the

AVC20's MONO output terminal

for best results.

(4)

Use

Input/Output Terminals

is possible to add

different audio source to video

software.

is also possible to dub onto

video deck

using a different audio source.

Connect as shown in the diagram.

Connect a playback video component (for example, a

video disc player) to the A-V INPUT

Input termi-

nals and depress the A-V INPUT

button on the

front panel.

Connect an audio component, such as

compact disc

player or cassette deck to the

input termi-

nals.

When the selector button of the front panel

depressed, the image from the video component

connected to

appears on the monitor. The sound

of the component connected to the

termi-

nals is produced from the speakers. The audio signal

from the TAPE input overrides the audio signal from

AV INPUTS

1.2, and

This can be recorded on to a video deck connected

to the output of either A-V INPUT

or 2.

With Input on the Left Channel

The left speaker output produces

sound.

(5)

Use

Input/Output Terminals

These can be used

input/output terminals for a

signal processor such as

graphic equalizer.

Connect as shown in the diagram.

Depress one of the A-V INPUT

1-3

or PHONO to

choose which component is to be played back, and

then depress the button.

Control by the signal processor is possible.

Refer to the signal processor instruction manual

for details on

its

use.

(4)

Connections for "Use of

Input/Output Terminals

Example

AVCZO Connections

Color Monitor

Lm/

Video Deck IHiFil

Video Disc Player (etc.)

m Audio Output Terminal

From Video

Output To Video Input Terminal

To Audio lnput Terminal

AVCZO

From Monitor Output Terminal

To Tape lnput Terminal

Audio Component

(Compact Disc Player,

Cassette Deck,

etc.)

(5)

Connections for "Use of

(TAPEl

InputIOutput Terminals

Example

AVC20 Rear Panel

Front Panel

To Tape Input Terminal

From Tape Output Terminal

Graphic Equalizer

(Rear Panel)

EXAMPLES

USE WITH

VARIETY

DIFFERENT EQUIPMENT

(Monophonic Video Deck)

As shown in the diagrams below, video signals are supplied to the television through the antenna

line, and audio signals pass through the

AVC20 to produce sound from the speakers. Turn down

the TV Volume whenever the

AVC20 amps are used.

Antenna

Antenna Line

---*

Audio Signals

Pin Jack Cord

Connection to AVC2O

UHF

Antenna VHF Antenna

Television

Cable

Regular

Video

Deck

Set the AVC20 AUDIOIVIDEO

SELECTOR to A-V INPUT

Set front panel switch to MONO or

SYNTHETIC STEREO. Choose the

one that sounds best to you.

Operate the video deck.

For operation of the video deck, refer

to its instruction manual.

MONITOR OUT

PHONO

A-V

INPUT

INPUT^

INPUTS

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Shure AVC20 User manual

Brand: Shure

Model: AVC20

Category: AV receivers

Type: User manual

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Shure AVC20 User manual

Shure AVC20 User manual

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